POK-mobile post below, kind of.
Still haven't figured out if I had a panic attack or not. I know that even yesterday when I thought about it, I immediately got nervous, as though scared it would happen again -- which thought was prompted by remembering someone else having that reaction after their first panic attack -- but I'm very leery of talking myself into some sort of anxiety disorder.
I remember being on a mailing list once where just that happened -- someone had a random panic attack once, and then feared getting another one so much that they made themselves even more nervous and upset.
Sleeping well last night seems to have helped, since I can talk about it today without getting too worked up (and without wanting to spend the night at my mom's Just In Case), though I accomplished that with some Tylenol PM (intentionally, for the first time...I bought the bottle by accident when I was having wisdom tooth problems and took it for lack of a pain killer). I'm still quite wiped, both from the actual event itself (you would have thought I'd run ten miles the way my heart was beating) and from the not sleeping, but getting there.
...meanwhile, I will need to make a Ralphs run tomorrow, and I'm going to make myself go back to the scene of the crime, so to speak, and not any other Ralphs.
Oh, and note to S., my student who has panic attacks: Next time you have one, you can have all the spicy chex mix in the world, as far as I'm concerned, if it makes you feel better. Props to you, buddy, just for being awake and happy at school every day. If there were a school award for courage, I'd give it to you at the next assembly without a second thought, kiddo.